trying to make a virtual walk-around, I started testing ambient lighting, according to the tutorials about it found in CGArchitect, using ambient only omnis and som free direct lights. It looks great, but the odd thing is that when i add a target spot, everything gets darker instead of brighter... in fact, every new light sustracts from the scene lighting unless its multiplier is less of those of the ambient omni... well, managed to tweak that thing around, but when i move the camera around, the lighting gets erratic, turning lights on and off for no apparent reason... has this happened to anybody before? how can this be tweaked? and if someone knows of alternative ways of lighting an interior scene without using GI, I'll be very thankful to hear about it.